Since oddternative (I just made that word up!) band OK Go became a viral sensation maker with their video for "Here It Goes Again" (the one where they're on treadmills), they've been in and escalating race to top their previous videos which work the theme of one single shot with wildly complex Rube Goldberg machines or complicated framing and props that are like Michel Gondry on steroids.

Earlier this year, they dropped this eye-popper for "Upside Down & Inside Out":

While they state up front that they shot it in an airplane flying parabolic arcs - the same method for parts of Apollo 13 - the limitation of creating weightlessness this way is that you only get about 27 seconds of zero-G per arc and the song was three-minutes-long.

So how did they do it? That's what the brief (19 mins) documentary Gravity Is Just A Habit (the title is a line from the lyrics) details, showing how the band connected with Russian filmmakers and used a huge cargo plane with the airplane set inside to film this epic in brief chunks, splicing it together to present a seemingly seamless whole.

While it looks like it'd be fun, it was actually grueling, nauseating work that took weeks of flights to pull off. The ending "Thunderdome" segment (where they burst paint balloons) is a point of drama because they'd thought they'd gotten a perfect take only to discover paint had landed on the lens, ruining the end. The debate about whether to take one more flight is complicated by one member, who looks absolutely miserable, not wanting to do it but knowing it has to be done.

If you're a behind-the-scenes junkie, this is well worth the time to check out.

Score: 7/10. Catch it on Netflix.

UPDATE: This video actual does a better job in explaining how they did it in a quarter of the time.